When people think about rocket fuels, they don't think of water at the top of their list, but water has been a key material in many serious studies on exploring the solar system and refueling in space. And it turns out that water electrolysis propulsion makes engineering sense for many applications. Using Water As Rocket Fuel - Is This The Future of Space Exploration? | 20:13 Scott Manley | 1.87M subscribers | 24,669 views | August 13, 2026